I vastly prefer being able to redownload software that I've paid for, but some people may prefer physical copies.

You do get other perks though - not having to keep track of discs, not susceptible to damaged disks, download-anywhere, unlimited times... etc.

The online features are also not too shabby - being able to join a friend's game in a single click is a pretty nifty feature that I use often.

Also, Steam generally gives 10% off for preorders, which is something brick and mortars aren't doing.

Aye, you cannot sell your games anymore. But i'm still a Steam fan, probably cause i'm older and not as skint as I once was.